Furnace Explosion
by Andriyko69
Furnace Explosion makes regular furnaces blow up when they smelt TNT, a joke mod built for NeoForge 1.21.1.
What it does
Players can put TNT into a regular furnace and add fuel as usual. The furnace starts smelting it and then explodes one tick before the smelting would finish, instead of producing a result. Only regular furnaces are affected; the blast furnace and smoker are left alone, so they do not explode.
Its author describes it as a joke mod, meant for trolling friends or teaching players to trust industrial equipment less. Files are published for NeoForge only, for 1.21.1, and the mod is server-side only, so players join a server running it without installing anything. The source code and issue tracker are public, and the code is released under the GNU General Public License v3.0 or later, which makes it open source.
Key features
TNT smelting
A regular furnace accepts TNT as a smelting input and processes it like any other recipe.
Delayed detonation
The explosion fires one tick before the smelting completes, so no item is ever produced from the TNT.
Regular furnaces only
The blast furnace and smoker do not trigger the effect, so the trap applies to one block type.
Pranks on servers
Because only the server runs the change, players can be caught out on a multiplayer world without any client-side setup.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Trolling friends
A furnace left in a shared base can catch someone who tries to smelt TNT there.
Teaching caution
Players who trust industrial setups without checking them can learn the hard way that a furnace may not be safe.
Who it’s for: Server owners and players who want a prank on a NeoForge 1.21.1 world. Clients need nothing extra, since the server alone runs the change.
How it compares
The TNT Update is client and server for NeoForge 1.21.8, under the MIT License and open source. LAirsTNT is client and server for NeoForge 1.21.1, under the MIT License and not open source. CobbleBoom is server-side only and open source under the MIT License, but it covers Fabric, Forge and NeoForge across 1.20.1 – 1.21.1. Furnace Explosion is also server-side only, and it is open source under the GNU General Public License v3.0 or later, for NeoForge 1.21.1 alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Furnace Explosion | NeoForge | 1.21.1 | Server-side only | 2026-03-09 |
| The TNT Update | NeoForge | 1.21.8 | Client and server | 2026-06-11 |
| LAirsTNT | NeoForge | 1.21.1 | Client and server | 2026-01-07 |
| CobbleBoom | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2024-12-30 |
Questions
Does Furnace Explosion need to be installed on the client?
Which furnaces explode?
Does Furnace Explosion work on other loaders?
In the catalog
Furnace Explosion is one of 7,555 Cursed mods on ModsFinder, and one of 2,801 Cursed mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from Andriyko69
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What the author says
Ever wanted to smelt TNT in a furnace for absolutely no good reason? Put TNT into a regular furnace, add fuel, and the furnace will happily start "smelting" it.. until 1 tick before completion, when it explodes instead.
Official listing
- Modrinth page
- modrinth.com/mod/furnace-explosion
- Owner
- Andriyko69
- Published
- 2026-03-09
- Updated on Modrinth
- 2026-03-09
- Facts verified
- 2026-10-15